You live where why wouldnt the tech tell you my tech always descrines my baby his face feet hands and stuff like that and tild me the sex of the baby ...good luck
To know the days until the info is posted is something you should ask your doc office or wherever it was you received the ultrasound, as some places have their stuff together more so than others. So it could be a while or very quickly, depends on the place. And then depends when doc feels like calling you.
Can you pay for a private scan where they will tell you the sex of the baby? Good luck!